Arturo ('Jack') Warman Gryj (September 9, 1937–October 21, 2003) was a Mexican anthropologist, member of the cabinets of Carlos Salinas and Ernesto Zedillo, also an author of nine books, two of which have been translated to English.
Warman studied elementary school at the Colegio Israelita de México and dropped after starting his secondary-level courses amidst a brief religious conflict with himself.
In 1956 he became interested in music and started recording his own songs, he enrolled in writing courses at the UNAM but dropped out after not being able to apply his knowledge to songwriting.
He was the director of the Instituto Nacional Indigenista (INI, National Institute for the Indigenous People), 1988–1991, Procuraduría Agraria (1991–1994) and Secretaría de la Reforma Agraria (SRA, Secretariat of the Agrarian Reform 1994–1999) which was the new name for the Secretaría de Agricultura y Recursos Hidráulicos (SARH, Secretariat of Agriculture and Water Resources) of the federal government of Mexico.
As director of the Procuraduría Agraria during the Carlos Salinas administration, he fought for the preservation of the ejidos while there was a discussion on disappearing them.